Blade



July 3, 1928. 1,676,001

w. P. ARON BLADE Filed March 1927 2 Sheets-Sheet 1 filig/ 3 fill-9.2.

July 3, 1928. 1,676,001

' W. P. ARON I BLADE Filed March 7. 1927 2 Sheets-Sheet 2 Patented July..3, 1928.

UNITED STATES PATENT OFFICE.

WILLIAM P. ARON, F DALLAS, TEXAS, ASSIGN 01ft, BY MESNE ASSIGNMENTS, TO THE WHISK RAZOR CORPORATION, OF BUFFALO, NEW

YORK.

YORK, A CORPORATION OF NEW BLADE.

Application filed March 7, 1927. Serial No. 173,464.

This invention relates to razor blades and with regard to certain more specific features,

to a razor blade for use in electrically operated safety razors or the like.

. Among the several objects of the invention may be noted the provision of ablade for safety razors adapted to receive a reciprocating movement in the razor guard, yet which may readily be set for non-reciprocating action such as is desired for purely manual operation thereof; the provision of blade of the class described adapted to minimize the danger of gouging the skin at the corners thereof; the provlsion of a blade of the class described having a reenforcing r1b and simplified means for assembling the blade and rib. Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly comprises the elements and combination of elements, features of construction, and arrangements of parts which will be exemplifiedwin the structure hereinafter described, and thescope of the application of which will be lndlcated in the following claims.

In the accompanying drawings, in which is illustrated one of various possible embodiments of the invention,

Fi 1 is a rear elevation of the razor to whic the blade is applied;

Fig. 2 is a perspectrve view of said razor,

taken from the front and side;

Fig. 3 is a sectional view of the razor head taken substantially on lines 3-3 of Fig. 1;

Fig. 4- is a vertical section of the razor viewed from the rear;

Fig. 5 is a plan view of the lower section of a guard;

Fig. 6 is a perspective new of an upper guard section adapted to fit with the guard section of Fig. 5;

Fig. 7 is a rear elevation of the blade used with the razor and comprising-the present invention; I

Fig. 8 is a plan View of said blade; and

Fig. 9 is a perspective view of a blade actuating element and armature. 9

Similar reference characters lndlcate correspondin parts throughout the several views of t e drawings.

Referrin now more particularly to Fig. 1, there isi ustrated at numeral 1, a hollow handle composed preferably of a dielectric and non-corroding material such as bakelite,

hard rubberor the like. screwed thereto a head or cap 3, preferably composed of the same material and enclosing within the handle 1 an electromagnetic coil or solenoid 5. The coil 5 is provided with a suitable magnetic core 7, the upper end of whlch is screwed through said head 3, whereby the relative positions of the handle 1 (includ ng the head 3) and the core 7 may be adjusted. A set screw 9 isadapted to'maintam any given adjustment. Suitably insu laged cgrgent leads 11 are provided for the so enol assin out of an o enin 13 in the handle p a p g of alternating or interrupted current.

The head 3 is shaped to include an inclosmg bracket portion 15, to which is held by suitable screws 17, a lower guard 19. In some designs made under this invention it may be desirable to form the guard 19 as an integral portion of the head '3.

Held to said lower guard 19,. by means of another suitable set of screws 21, is an upper guard or cap 23 having a channel or groove 25 cut therein, for the purpose of slidably accommodating one side of a reenforcing rib 27 formed along the rearward unsharpened edge of the blade B (see Figs. 2, 6 and 8).

-The other side of said rib 27 rests on the flat surface of the lower guard 19, while the steel blade 29 per se fits in a slidable manner between a ridge 31 of said lower guard 19 and a spaced tongue 33 of said upper guard 23. As illustrated in Fig. 5, recesses 35 are formed in the lower guard 19, in order to enable a purchase to be had by a user on the blade 29 so that said blade may be conveniently inserted and withdrawn when desired.

This handle 1 has l and leading to a suitable source The blade B has the rib 27 pinched thereover. Its rear unsharpened edge is provided with two notches 37 one of which during assembly becomes positioned 'in an opening 39 formed in said rib 27. The opening 37, 39 in the blade B is unsymmetrical] located.

This is because the opening 39 o the bent rib 27 is unsymmetrically located with respect to the length of the rib, being so positioned as to expose either one of the symmetrically arranged notches 37 when the blade element 29 and rib are assembled, regardless of the relative end relationships be tween said blade element and rib.

With regard to the width of the rib, the opening 39 is symmetrically placed, that is,

with respect to the folded edge 28 of said rib, whereby one of the notches 37 is" exposed on both sides of the blade.

A hole 30 formed in the member 29 per mits the relatively soft metal of the rib 27 to pinch inwardly when applied to said member 29 by pinching. Thus the parts are held together well.

It is evident that the notches 37 are used in order that the blade and rib may be assembled in either of their two relative posi: tions but only one opening 39 is used. -The blade is suitably sharpened at its front edge 41. A small recess 43 at one end of the rib 27 permits the aforesaid purchase to be had on the blade when removal is desired. The finger nail of the user may be positioned in this recess 43 to accomplish the end in view.

The edge 41 of the blade member 29 is beveled at the ends 32 so that the full width of the guard 19 may be followed by a cutting blade (the member 29 being substantially equal in width to said guard). By this means the reciprocations of the blade (to be described) do not result in sharp corners being thrust out from the two ends of the guard 19 as reciprocation proceeds.

In order to impart reciprocating motion to the blade B, when it is slidably positioned between the guards 19 and 23, a boss 45 is provided, forming an integral portion of said lower guard 19 at one end thereof. To this boss is fastened, preferably by means of a screw 47, a flexible springing magnetic armature 49.

The armature extends in a direction parallel with the underside of the guard 19 to a point adjacent the opposite end of said guard, the parallel portion being normally positioned in proximity to an outwardly positioned nose 53 of said solenoid core 7.

It is evident that the free portions of the spring armature 49 will be caused to vibrate when alternating varying or interrupted current is applied through the solenoid 5.

With the alternating or like current usually available, the vibration takes place at a rapid rate. i

The purpose of vibrating the armature 49 is to reciprocate the blade B (with its rib 27) and in order to readily accomplish this end, an arm or finger 55 having a nose 57 is angularly turned up from the armature 49. This arm 55 (with its nose 57) is adapted to pass loosely through an opening 59 in the guard 19 and into a recess 61.

The notch 37 is normally positioned be-.

Q tween the opening 59 and recess 61 where it is adapted to be engaged by said nose 57. Consequently, the vibratory action of the armature '49 in vibrating the nose 57 results -in the, blade B receiving a reciprocating movement between the guards 19 and 23. The opening 59 and recess 61 are of such dimensions as to freely accommodate the lateral movements of the arm 55 and nose 57.

For readily inserting and removing blades, a recess 63 is provided in the arm 55, just below the nose 57, which recess in normal operation of the razor is positioned below the notch 37, the nose 57 at this time engaging said notch 37. A downwardly directed finger-65, also a part of said armature 49 is so arranged that thereby the armature may be sprung upwardly when the said finger 65 is manually lifted. This'action forces the nose 57 well into the recess-61 of the upper guard 23 and causes the recess 63 to register with the blade members, 27, 29, whereby the blade members are in cleared position for unrestricted movement, out from between said guards 19 and 23. An analogous operation is performedin replacing another blade.

It is evident that the relative adjusting movement possible between the armature 49 and the core 7 permits an operator to vary the blade stroke at will.

I If, for any reason, the supply of current should fail at the leads 11, this razor may be readily converted to a non-reciprocating type by removing the blade in the manner above described and replacing it, after having changed its position end for end. The armature is maintained in its raised position during this operation. The reversal of the blade position takes the openings 37, 39 out of register with the openings 59, 61 and consequently upon releasing the finger 65, the nose 57, instead of engaging said notch 87, engages the un-notched edge 69 of the rib 27 thereby tightly pressing the blade into a stationary shaving position.

In View of the above, it will be seen that the several objects of the invention are achieved and other advantageous results attained.

As many changes could be made in carrying out 'the'above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

I claim:

1. The razor blade comprising an element sharpened on one edge and having two symedge and partially into said hole, said rib having an opening unsymmetrically located therein adapted to expose only one of said notches.

3. The razor blade comprising an element sharpened on one edge and having two symmetrically located notches in the other edge, said element having a hole therein, a rib adapted to be pinched oversaid notched edge and partially into said hole, said rib having an opening unsymmetrically located therein adapted to expose only one of'said notches and a recess in said rib for providing a purchase on the blade.

4. The razor blade comprising an element sharpened on one edge and having two symmetrically located notches in the other edge, said element havin a hole therein, a rib adapted to be pinche over said notched edge and partially into said hole, said rib having an opening unsymmetrically located therein adapted to expose only one of said notches on both sides of the blade and a recess in said rib for providing a purchase on the blade.

5. The razor blade comprising an element sharpened on one edge and having two symmetrically located notches in the other edge, a rib adapted to be pinched over said notched edge, said rib having an opening unsymmetrically located thereln adapted to expose only one of said notches.

6. The razor blade comprising an element edge, a rib adapted to be pinched over said notched edge having an opening exposing said notch.

8. The razor blade comprising an element sharpened on one edge, the ends of said edge belng beveled, at least one notch in the other edge, a rib adapted to be pinched over said notched edge having an opening exposing said notch, said opening being unsymmetris cally arranged with respect to the length of the blade.

9. The razor blade having a sharpened edge and an unsharpened edge comprising a rib, the latter having an unsymmetrieally arranged opening therein, whereby a movable member may be applied to said blade for moving it and a recess in said rib for providing a purchase on the blade.

In testimony whereof, I have signed my name to this specification this second day of March, 1927.

WILLIAM P. ARON. 

